Automatic antenna for portable electronic device

Abstract

An automatic antenna (100) for a portable electronic device includes a shaft (20), a hollow securing element (30), a sliding element (50) having a plurality of sliding arms (54) symmetrically disposed on an outer wall thereof, a hollow rotating element (60), a housing (80), and a spring (70) disposed between the rotating element and the housing. The securing element has a plurality of blocks (320) symmetrically disposed on an inner wall thereof. The blocks define a plurality of slots (3200) therebetween. The sliding element defines an end surface (56). The rotating element includes a peripheral cam portion (61). A plurality of projections (604) protrudes from a periphery of the cam portion. The shaft extends through the securing element, the sliding element, the rotating element, the spring, and the housing in that order. The sliding arms can slide within the slots, and the projections can slide in the slots.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention generally relates to automatic antennas, and particularly to an automatic antenna for a handheld radiotelephone. [0003] 2. Prior Art [0004] In recent times, communication terminals have been in great demand because of the widespread use of devices such as cellular phones and pagers for mobile communication. In wireless communication systems, wireless communication terminals transmit signals to base stations. The base stations relay the signals to intended recipient communication terminals all the time, regardless of whether the intended recipient communication terminals are in communication-waiting mode. Portable electronic devices such as mobile phones and cordless telephones generally transmit and receive signals by antenna, and antennas that are used in these devices are in great demand. [0005] Automatic antennas for portable electronic devices can be divided into two categories: built-in an...

AI Technical Summary

Benefits of technology

[0009] Accordingly, an object of the present invention is to provide an automatic antenna for a portable electronic device which has a relatively simple configuration and convenient operation.

Problems solved by technology

However, the built-in antenna is subject to shielding phenomena, which can greatly interfere with the transmission and reception of signals.

In particular, when the housing of the portable electronic device is made of an alloy such as aluminum combined with magnesium, the shielding phenomena are serious and problematic.

There is some scientific research suggesting that frequent use of this kind of portable electronic device exposes the user's brain to much electromagnetic radiation which may be harmful.

However, both of these operations require the user to use both his / her hands together.

If the user has only one hand free, he / she cannot operate the antenna.

In addition, the protrusion may be unduly thick, which may detract from the aesthetic appearance of the mobile phone.

In addition, the driving mechanism is complicated and bulky, and adds to an overall size of the mobile phone.

Furthermore, the power consumption of the mobile phone is increased, which adds to the cost of owning the mobile phone.

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